This is true It has happened before and was one of the factors that influenced the current position of the continents. It will surely happen again if one day an ice age happens.
I would say nonrenewable, because it renews itself at a rate slower than the amount of human use or consumption, so it would be more difficult to obtain. Hope this helps!
The base level is the lower limit of the erosional process and the ultimate base level is the plains that result from the projection of sea level under the landmass. This process of erosion creates a peneplain.
The base level is dynamic and changes according to the following factors as sea-level changes, tectonic factors, river captures, and sedimentation.
Peneplinasare low featureless deposits that are created by the terminus of the dream where the sediments are merged with the sea.
